Fountain-pen.



PATENTED JAN. 16, 1906.

M. R. CROSSMAN.

FOUNTAIN PEN.

APPLICATION FILED MAY 29.1905.

UNITED STATES PATENT oEEIoE.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed M y 29,1905. Serial No. 262,791.

T0 all whom, it may concern:

Be it known that I, MARTIN R. CRossMAN, a citizen of the United States,and a resident of Boston, county of Suffolk, and State of Massachusetts,have invented an Improvement in Fountain-Pens, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like numerals on the drawings representing like parts.

This invention relates to fountain-pens, and particularly to a devicefor preventing pens from sweating.

Most fountain-pens sweat more or less, (this termbeing used to describethe film or coating of ink which gathers between the holder and the capwhen the cap is covering the pen-point) and whenever a pen does sweat inthis way it becomes necessary to wipe the ink from the outside of theholder before the pen can be used.

I have provided a novel antisweating device which can be applied to anypen and which by its presence prevents all leaking or sweating.

My improved device is in the nature of a cap, which fits tightly overthe pen-point and covers the air-holes therein, and thus prevents eitherescape of ink from the holder or the admission of air thereto. The capis made to fit tightly over the pen-point. Therefore its presence doesnot interfere in any way with the operation of removing or replacing theregular cap for the holder.

l/Vhen in use, my improved antisweatingcap is supported and carriedentirely by the pen-point and does not contact with the regular cap forthe holder.

In the'drawings, Figure 1 shows a fountainpen having my improvementsapplied thereto, the cap for the holder being shown in section. Fig. 2is asection on an enlarged scale on the line m, Fig. 1. Fig. 8 is a viewof the antisweating-cap. Fig. 4 is a view of a holderclip which isespecially constructed to sustain my antisweating-cap when the latter isnot in use.

3 designates the holder or barrel of a fountain-pen; I, the usual capwhich covers the pen-point when the pen is not in use; 5, the pen-point,and 6 the feed-bar. These parts are or may be of any suitable or usualconstruction and form no part of my present invention. My inventionresides in a cap which is entirely distinct and separate from theregular cap 1 and which is of a shape to tightly fit over the pen-point5. In the drawings, 7 designates this cap, which I have referred to asan antisweating-cap. The cap 7, it will be seen, fits tightly over theback of the pen-point 5 and closes the air-hole and the slit with whichall pens are provided. The cap 7 may be made of any suitable material. Ametal cap which had the proper shape to tightly fit over the pen-pointwould embody my invention; but it will be obvious that a cap made ofsome non-yielding material would fit only a certain size and shape ofpen, and to equip a variety of pens with my invention would necessitatethe making of a considerable number of caps7 of different shapes. Iprefer, therefore, to make the cap 7 of some yielding materialsuch, forinstance, as rubberso that a certain sized cap can be used with pens ofdifferent sizes and shapes. I prefer also to .make the cap substantiallyconical in shape, as shown in the drawings. It will be understood, ofcourse, that the cap is closed at its end.

hen a cap embodying my invention is placed on the pen-point of afountain-pen, the air-hole and the slit of said pen are closed, andtherefore no ink can escape from the pen, nor can any air get into theholder. It will be impossible, therefore,for the pen to sweat that is,for the ink to gather between the cap and the holder. Another resultwhich follows from the use of my invention is that the cap7 when inplace keeps the pen-point moist so that the pen is ready for use theinstant that the cap is removed. I prefer to provide the base or mouthof the cap with the bead or thickened portion 15, which causes the capwhen in place to hug the pen more tightly.

My invention also includes a novel holder or support for the cap 7 whenthe pen is in use. Referring to Fig. a, 10 designates asuitable clip,which maybe secured in some suitable way to the cap 4t of pen and bymeans of which the pen is retained in the pocket. I have provided thisclip with a tubular holder 11, which is. adapted to receive the pointedend 12 of the cap, all as shownin Fig. 4:. My invention, however, is notlimited to the form of holder shown herein, as any suitable means forsupporting the cap 7 when the pen is in use may be employed.

Various changes in the construction of the cap and its holder may bemade without departing from my invention.

My improved device will also prevent the pen from leaking if by chanceit is carried bottom side up.

Having fully described my invention,what I claim as new, and desire tosecure by Letters 5 Patent, is

In a fountain-pen, a holder, a pen-point, a cap to fit over the holderand pen-point, an antisWeating-cap of a size to be received Withinfirst-mentioned cap and of a shape to fit IO tightly over the pen-pointand means carried by the pen to sustain said antisWeating-cap when thelatter is not in use.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

MARTIN R. CROSSMAN.

Witnesses:

Louis 0. SMITH, MARGARET A. DUNN.

